Teenage Engineering OB-4 “The Magic Radio”
Teenage Engineering OB-4 link Available in multiple colors.
Buy Teenage Engineering OB-4 at Amazon in Glossy Red, Glossy White, or Matte Black.
Speaker Dimensions: 9.2″ wide, 11.2″ high, 2.3″ deep, and weighs 3.7 pounds.
Speaker Drivers: Two high-efficiency ferrofluid cooled tweeters and two 4″ long-throw high power capacity woofers each with neodymium drivers, plus a flow optimized bass reflex duct on the left side. 76 watts RMS of total class D amplification. Max 92dB SPL with 104dB bass capability. Frequency response is 52Hz – 25kHz.
Battery Playtime: Up to 72 hours (normal volume FM), up to 40 hours (normal volume Bluetooth), and up to 8 hours (high volume Bluetooth). Charging time is unspecified.
Dust and Waterproof Rating: N/A
Connectivity: Bluetooth, 3.5mm stereo line-in on top of speaker, FM radio, disk mode. Motorized volume knob and tape reel. Download the orthoplay App.
Included Accessories: Power cable charger and FM radio antenna.
Optional Accessories: leather bag and strap, leather strap, duty tote bag also available at Amazon, mesh bag green, mesh bag red, field shoulder bag, ortho remote
Additional Features: Current disk mode functions include ambient, karma, metronome, noise, and loop. OB-4 allows you to rewind and fast forward anything you have listened to during the previous two hours. FM antenna integrates into handle.
More YouTube Videos: OB–4 the magic radio, OB–4 new colors
Page last updated on 11/21/2025.